正该来时，先生（老子）应时来到这世间；正该去时，先生顺时离开这世间。安于时势，顺应自然规律，哀乐就不能进入心中。

Education is the most powerful weapon which you can use to change the world.

我不是那种会让我的家人失望的人。

Future competition is about the industrial chain; enterprises must build ecological synergy advantages.

The world needs more forests, not fewer.

宏观经济学的核心问题是理解人们如何随时间做出决策。

Language is the only homeland we truly possess.